http://stackoverflow.com/questions/6290470/eclipse-debugger-always-blocks-on-threadpoolexecutor-without-any-obvious-excepti
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Configuring the behavior of Eclipse is straightforward - in the Preferences Dialog, the Debug pane under Java in the tree hierarchy, has the option titled "Suspend execution on uncaught exceptions", which can be unchecked.
Windows->Preferences->Java->Debug
取消勾选 "Suspend execution on uncaught exceptions"，如图
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